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Compasses with ruler

A technology of compass and ruler, applied in the field of compasses with ruler, can solve the problems of inconvenience of use and storage, and achieve the effect of solving the inconvenience of use and storage

Inactive Publication Date: 2016-04-06
XIANGYANG NO 39 MIDDLE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The beneficial effects of the present invention are: by directly combining the ruler and the eraser on the compasses, the ruler can be used to measure and mark the radius of the drawn circle very conveniently, and the eraser can also be directly used to In addition to the modification, it solves the problem that the existing compass, ruler and eraser are each a single product, which is inconvenient to use and retract.

Method used

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  • Compasses with ruler

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Effect test

Embodiment Construction

[0008] figure 1 Shown: the compass is connected with a handle 3 above the ruler 2 outside the gauge rod 1 and has a replaceable rubber 4.

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PUM

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Abstract

The invention provides compasses with a ruler. The ruler is connected to the outside of one of gauge bars of the compasses, and a handle on the upper portion of the compasses is sleeved with a replaceable eraser. Through the arrangement, using of the compasses is very convenient, the ruler can be directly used for measuring, calculating and determining the radius of a circle graph, and the circle graph can be erased and modified at any time.

Description

technical field [0001] The invention relates to a compass, specifically a compass with a ruler. Background technique [0002] Compasses are special stationery for drawing circular figures. When compass is in use, it is necessary to use a straightedge to measure and mark the radius in order to accurately draw a circular figure. At the same time, if there is a mistake, it must be erased and modified. The ruler used in conjunction with the compass The rubber and the compasses must be retracted and used at the same time. Contents of the invention [0003] The invention provides a compass with a straightedge. The compasses, the straightedge and the rubber are combined together, and the use and storage are very convenient. [0004] The present invention includes the gauge bar of the compass and the upper handle, and the adopted technical solution is: the compasses is connected with a ruler above the handle on the outside of the gauge bar and covered with a replaceable rubber. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L9/02
Inventor 彭华瑞
Owner XIANGYANG NO 39 MIDDLE SCHOOL